Simply put, these are called ‘container’ files, which typically emulate traditional CD or DVD optical media, which have files contained within. You may also want to convert apple’s native dmg format to iso or vice-versaįoreword To be clear, what exactly is an img, dmg or iso file?.Micro SD installation media for a Raspberry Pi.Installation media for a Linux operating system such as Ubuntu, Sabayon, Redhat, SuSe or any other flavour.Installation media for Windows 10, 7 or any other version.To create bootable installation media on a USB stick such as:.Please see the ‘Summary Overview’ tab below for a high level view of the objectives this ‘howto’ will achieve.